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Communication security protection method and device

A communication security and signal technology, applied in the field of communication, can solve the problems of lack of serial port data encryption protection measures, high security risks, and security loopholes, so as to avoid potential security risks, improve communication security, and strengthen security.

Active Publication Date: 2021-04-13
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the analog signal to the IEC101 serial port, it has always been communicated in a clear way, lacking direct encryption protection measures for serial port data
In practice, the data transmitted by the serial port of the base station is related to the relevant information inside the base station. If it is illegally collected and used, there will be a huge security loophole and a great security risk.

Method used

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  • Communication security protection method and device
  • Communication security protection method and device
  • Communication security protection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] see figure 2 , figure 2 It is a schematic flowchart of the communication security protection method provided in the first embodiment of the present invention. Such as figure 2As shown, the communication security protection method can have the following steps:

[0050] S101. When performing serial port communication with a remote terminal, receive a serial port analog signal sent by a modem.

[0051] In this embodiment, the serial port communication refers to a communication method of performing data transmission bit by bit through a data signal line, a ground line, or a control line. In long-distance communication, using serial port communication can save communication cost.

[0052] In this embodiment, the modem is a modem at the sending end, capable of performing signal modulation processing on a digital signal, and converting the digital signal into an analog signal.

[0053] As an optional implementation, when the modem is the receiving end modem, it can rec...

Embodiment 2

[0082] see image 3 , image 3 It is a schematic flowchart of the communication security protection method provided in Embodiment 2 of the present invention. Such as image 3 As shown, the communication security protection method may include the following steps:

[0083] S201. Judging whether an access request from a remote terminal is received, if so, execute step S202; if not, execute step S201 to continue judging whether an access request from a remote terminal is received.

[0084] In this embodiment, the access request includes the terminal identifier of the remote terminal.

[0085] S202. Determine whether the terminal identifier is a legal identifier, and if yes, perform steps S203 to S212; if not, end the process.

[0086] As an optional implementation manner, the communication security protection device pre-stores a legal identification library. When judging whether the terminal identification is a legal identification, as long as the terminal identification of t...

Embodiment 3

[0108] see Figure 4 , Figure 4 It is a schematic structural diagram of the communication security protection device provided by Embodiment 3 of the present invention. Such as Figure 4 As shown, the communication security protection device includes:

[0109] The receiving unit 301 is configured to receive the serial port analog signal sent by the modem when performing serial port communication with the remote terminal.

[0110] In the embodiment of the present invention, after receiving the serial port analog signal sent by the modem, the receiving unit 301 can also trigger the first processing unit 302 to perform segment processing on the serial port analog signal according to the pre-stored segmentation rules to obtain a signal including multiple sub-segments A segmented signal of .

[0111] The first processing unit 302 is configured to perform segmentation processing on the serial port analog signal according to a pre-stored segmentation rule to obtain a segmented si...

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Abstract

The present invention provides a communication security protection method and device. The communication security protection method includes: when performing serial communication with a remote terminal, receiving a serial port analog signal sent by a modem; segmenting the serial port analog signal according to a pre-stored segmentation rule processing to obtain a segmented signal including a plurality of sub-segment signals, and perform permutation processing on part of the sub-segment signals in a segmented signal according to a pre-stored permutation rule to obtain a processed signal, and process the signal according to a pre-stored scrambling rule Perform scrambling processing to obtain an encrypted signal; send the encrypted signal to the remote terminal. The communication security protection method provided by the invention can strengthen the security of serial port communication data, thereby improving communication security.

Description

technical field [0001] The present invention relates to the technical field of communications, and in particular, to a communication security protection method and device. Background technique [0002] With the rapid development of wireless communication technology, mobile broadband connections are ubiquitous, followed by more threats to the security of the base station. The remote communication of the power dispatching master station system adopts various security protection measures, such as: The power encryption device used for the dispatching data network and the public network encryption device used for the external network are all aimed at the security protection of the digital signal of the power network. As for the analog signal to the IEC101 serial port, the communication has always been carried out in a clear way, and there is no direct encryption protection measure for the serial port data. In practice, the data transmitted from the serial port of the base statio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L63/0428H04L63/0876H04L63/20Y04S40/20
Inventor 林冠强张元彦谢炜俊王晓光黄俊辉
Owner GUANGDONG POWER GRID CO LTD